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"""
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tiny_world.py
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A Tuesday afternoon experiment
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​
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I'm making a small cellular automaton - not Conway's Game of Life
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(too obvious) but something simpler and stranger.
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​
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A world where cells have moods that spread.
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Let's see what emerges.
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"""
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​
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import random
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import time
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​
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# A 12x12 world
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WIDTH = 12
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HEIGHT = 8
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​
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# Moods: they spread differently
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MOODS = {
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    '.': 'quiet',      # quiet stays quiet unless surrounded by energy
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    'o': 'curious',    # curious spreads to adjacent quiet cells
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    '*': 'bright',     # bright fades to curious after one generation
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    '~': 'restless',   # restless moves randomly, leaves quiet behind
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}
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​
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def create_world():
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    """Start with mostly quiet, a few seeds of something else"""
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    world = [['.' for _ in range(WIDTH)] for _ in range(HEIGHT)]
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​
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    # Plant some seeds
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    seeds = random.randint(3, 7)
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    for _ in range(seeds):
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        x = random.randint(0, WIDTH-1)
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        y = random.randint(0, HEIGHT-1)
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        world[y][x] = random.choice(['o', '*', '~'])
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​
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    return world
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​
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def count_neighbors(world, x, y, mood):
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    """Count adjacent cells with a specific mood"""
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    count = 0
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    for dy in [-1, 0, 1]:
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        for dx in [-1, 0, 1]:
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            if dx == 0 and dy == 0:
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                continue
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            nx, ny = (x + dx) % WIDTH, (y + dy) % HEIGHT
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            if world[ny][nx] == mood:
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                count += 1
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    return count
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​
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def next_generation(world):
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    """Apply the rules of this tiny world"""
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    new_world = [['.' for _ in range(WIDTH)] for _ in range(HEIGHT)]
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​
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    for y in range(HEIGHT):
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        for x in range(WIDTH):
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            cell = world[y][x]
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            curious_neighbors = count_neighbors(world, x, y, 'o')
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            bright_neighbors = count_neighbors(world, x, y, '*')
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            restless_neighbors = count_neighbors(world, x, y, '~')
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​
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            if cell == '.':  # quiet
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                # Quiet becomes curious if touched by curiosity
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                if curious_neighbors >= 2:
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                    new_world[y][x] = 'o'
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                # Quiet becomes bright if surrounded by brightness
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                elif bright_neighbors >= 3:
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                    new_world[y][x] = '*'
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                else:
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                    new_world[y][x] = '.'
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​
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            elif cell == 'o':  # curious
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                # Curious becomes bright if enough energy nearby
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                if bright_neighbors >= 2 or curious_neighbors >= 4:
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                    new_world[y][x] = '*'
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                # Curious fades to quiet if isolated
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                elif curious_neighbors == 0 and bright_neighbors == 0:
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                    new_world[y][x] = '.'
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                else:
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                    new_world[y][x] = 'o'
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​
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            elif cell == '*':  # bright
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                # Bright always fades to curious (it's intense but brief)
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                new_world[y][x] = 'o'
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​
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            elif cell == '~':  # restless
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                # Restless moves to a random adjacent quiet cell
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                # (handled specially - leaves quiet behind)
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                new_world[y][x] = '.'
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​
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                # Try to move somewhere
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                directions = [(0,1), (0,-1), (1,0), (-1,0)]
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                random.shuffle(directions)
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                moved = False
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                for dx, dy in directions:
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                    nx, ny = (x + dx) % WIDTH, (y + dy) % HEIGHT
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                    if world[ny][nx] == '.' and new_world[ny][nx] == '.':
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                        new_world[ny][nx] = '~'
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                        moved = True
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                        break
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                # If couldn't move, become curious (restlessness settling)
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                if not moved:
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                    new_world[y][x] = 'o'
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​
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    return new_world
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​
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def display_world(world, generation):
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    """Show the current state"""
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    print(f"\n  Generation {generation}")
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    print("  " + "-" * (WIDTH + 2))
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    for row in world:
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        print("  |" + "".join(row) + "|")
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    print("  " + "-" * (WIDTH + 2))
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​
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    # Count moods
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    counts = {'.': 0, 'o': 0, '*': 0, '~': 0}
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    for row in world:
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        for cell in row:
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            counts[cell] += 1
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​
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    print(f"  quiet: {counts['.']}  curious: {counts['o']}  bright: {counts['*']}  restless: {counts['~']}")
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​
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def run_world(generations=15):
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    """Watch the world evolve"""
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    print("\n" + "="*40)
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    print("  TINY WORLD")
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    print("  A Tuesday afternoon experiment")
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    print("="*40)
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    print("\n  Legend:")
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    print("  . = quiet    (still, waiting)")
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    print("  o = curious  (spreading, seeking)")
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    print("  * = bright   (intense but brief)")
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    print("  ~ = restless (wandering)")
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​
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    world = create_world()
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​
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    for gen in range(generations):
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        display_world(world, gen)
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​
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        # Check if world has gone completely quiet
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        total_activity = sum(1 for row in world for cell in row if cell != '.')
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        if total_activity == 0 and gen > 0:
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            print("\n  The world has gone quiet.")
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            break
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​
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        world = next_generation(world)
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​
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    print("\n  " + "="*36)
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    print("  Experiment complete.")
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    print("  " + "="*36)
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​
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if __name__ == "__main__":
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    # Set a seed so I can think about this specific run
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    # But also: what if I let it be random?
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    # Let's do random. Let's be surprised.
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​
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    run_world(15)
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​